2.02×8.5=?1.25＋4.6＋0.75=?递等式计算、要简便哦!_数学解答

2.02×8.5=?1.25＋4.6＋0.75=?递等式计算、要简便哦!

人气：280 ℃　时间：2019-08-17 18:10:46

解答

2.02*8.5 1.25＋4.6＋0.75
=(2+0.02)*8.5 =(1.25+0.75)+4.6
=2*8.5+0.02*8.5 =2+4.6
=17+0.17 =6.6
=17.17